GHSA-qpmx-3rfj-7rhv
Symfony has Email Header / SMTP Command Injection via CRLF in Symfony\Component\Mime\Address
상세
### Description
`Symfony\Component\Mime\Address` is the value-object every Symfony Mailer address (to/cc/bcc/from/reply-to) flows through; its constructor is documented as validating the address and throwing on invalid input, so developers treat it as a security boundary.
The constructor accepts email addresses whose local-part (the part before `@`) is an RFC-5322 *quoted string* containing raw `\r\n` bytes, e.g. `"x\r\nBcc: attacker@evil"@example.com`. The stored address is later emitted verbatim into (1) the rendered message headers and (2) `SmtpTransport`'s `MAIL FROM:<...>` / `RCPT TO:<...>` protocol lines, turning the embedded CRLF into a new mail header and/or a new SMTP command.
### Resolution
The `Address` constructor now rejects addresses containing line breaks.
The patch for this issue is available [here](https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604) for branch 5.4.
### Credits
We would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.
이 버전이 영향받나요?
사용 중인 패키지 버전을 입력하면 즉시 평가합니다.
영향 패키지
6.0.0 수정 버전: 6.4.40 composer require symfony/symfony:^6.4.40 7.0.0 수정 버전: 7.4.12 composer require symfony/symfony:^7.4.12 8.0.0 수정 버전: 8.0.12 composer require symfony/symfony:^8.0.12 참고
- https://github.com/symfony/symfony/security/advisories/GHSA-qpmx-3rfj-7rhv [WEB]
- https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604 [WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mime/CVE-2026-45067.yaml [WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45067.yaml [WEB]
- https://github.com/symfony/symfony [PACKAGE]
- https://symfony.com/cve-2026-45067 [WEB]